The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Israel's Dead Sea is 1,312 feet below sea level.
48
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The water of the Antarctica is so cold that nothing can rot there.
334
Every year, Alaska has about 5,000 earthquakes.
31
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
It's still possible to see the division between East and West Germany due to different light bulbs.
5